Surgical instrument



FIG. 1 is a perspective view of the surgical instrument embodying my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof.

The characteristic feature of my design resides _in the intersecting, dual planar, twisted tip configuration _ of each blade member of the surgical instrument, as shown in the drawings. 

The ornamental design for a surgical instrument, substantially as shown and described. 